Nearly everywhere it's written that it's not possible.. But why?
Why can't I dump a GPT/MBR partition table in the first sector? Basically dump a disk layout with sector size 2048…
Now I'm sure something of this type is possible, but of course no OS will recognise it.. So the question is, why not? What's so hard in a partition table? What's the technical reason behind zero support for partitioning an optical disc?
Best Answer
There may be two main reasons why partitioning isn't a well supported feature on optical media:
Nowadays, there are much better solutions such as pen drives or even portable HDD. Not everyone has a Blu-Ray reader and not everyone wants to purchase a RW DVD. As such, in what regards optical media, partitioning was never demanded enough for it to happen.
I do have to point out the answer Rod Smith gave to a similar question, which I'm now quoting:
As you can see, it isn't technically impossible to do, but where it's done it's to provide additional support that couldn't be done in another way.